Window-shade-trimming apparatus.



PATENTED AUG. 11, 1903* J. A; Tums,

WINDOW SHADE TRIMMING APPARATUS.

- APPLICATION B 1903 Inn's-slink 1.

I 3mm JazneaA..7'w/Zs No. 736,317. I PATBNTED AUG; 11, 1903.-

. fl J.; AL'TUFTS. WINDOW SHADE TRIMMING APPARATUS.,

APPLIoATIon IIL'ED'IEB. z. 1903. no MODEL. I

UNITED STATES r mmed August 11, 1903.

PATENT OFFICE.

. JAMES A. TUFTS, OF ABILENE, KANSAS.

SPEGIFIGATION forming part of. Letters Patent N 0. 736,317, dated August 11, 1903, Application filed February 2, 1903. Serial N0- l41,536. (No model.)

To. all whom it may concern;

Be it known that I, JAMES A. Tours, a citizen of the United States, residing at Abilene,

in the county of Dickinson and State of Kansas, have invented certain new and useful Improvements in windoweShade Trimming Apparatus; and I do hereby declare the following to be a full, clear, and exact descrip-' cutting apparatus; but my invention comprehends specific improvements in the details for accomplishing the desired ends.

My improved device for carrying the knife while it revolves serves to impart to the knife a dragging action, which I find gives highly important and satisfactory results, and to this end my invention also relates;

WVith these as the prime objects the improvements and theadvantages derived therefrom will be fully described, and particularly pointed out in the claims.

In the drawings forming a part of this specification, Figure 1 is a perspective view of my improved apparatus in operation. Fig. 2 is a longitudinal section of the same. Fig. 3 is a front elevation, the knife being shown in its operative position in dotted lines. Fig. 4c is a detail perspective view of the face of the shadereceiving sleeve. Fig. 5 is a detail perspective view of the revoluble supporting member. Fig. 6 is a similar view of the knifecarrying member. a

The same numerals refer to like parts in all I the figures.

1 represents a table or other support, 2 a block fastened thereto, and 3 a shade'receiving sleeve supported by said block. The sleeve 3 comprises a V-shaped seat 4:, a flange 5, and a cylindrical bearing 6, which projects ber let, and in order to hold the said member i 14 in its relation with the member 7 the lugs are each provided with flanged heads 17. A knife 19 is fastened to the member 14 and projects inwardly toward the center of ring 8,

the knife having an edge 20 on its front lower sides, its inner side being guided against the face of the annular ring 11. A handle 21 is formed on the outer end of the member 14 for the ready manipulation of my improved apparatus.

A portion of the top of the sleeve is open, and across the open part is a lever 25, hinged to the block 2 at 26. This lever is designed to be pressed down on the shade during the period of trimming. V

The parts thus assembled, the operation is substantially as follows: A window-shade 27, wound on its roll, is seated in the sleeve 3,

the end to be trimmed being passed out beyond the knife 19, whereupon the lever 25 is pressed down on the shade with the left hand. This securely holds the shade infixed relation. The operator now grasps the handle 21 with the right hand, and the knife is drawn toward the shade and then carried around it sev eral times. The two movements-the draw ing and revolving of the knifepositively insure the shade being cut with a very slight effort. The shape of the cutting edge, combined with the peculiar arrangement of the assembled parts, permits of the knife being dragged circumferentially, while atthe same time radial pressure is being applied... As the member 1 1 is movably fixed to the member 7 and as the latter has but one bearing, obviously there is little friction between. these parts. After the knife has severed the shade several important results take place, to wit: The shade is positively held fast while being trimmed by efficient and simple means, thetrimmed edge is sure to be severed on a straight line, and the knife may be quickly disengaged from the field of the shade.

What I claim as new is 1. In a shade-trimming apparatus,the combination with a stationary sleeve having a shade-seat therein, an annular bearing on the sleeve, a knife-carrying member mounted on the bearing to be circumferentially and radially moved, and a knife fixed to said mem ber, substantially as described.

2. In a shade-trimming apparatus,the combination with a stationary sleeve having a shade-seat therein, an annular bearing on the sleeve, a revolving member mounted on the bearing, a knife-carrying member slidably mounted on the revolving member, and a knife on the knife-carryin g member, wh ereby the knife may be simultaneously circumferentially and radially moved with relation to the shade, substantially as described.

3. In ashade-trimming apparatus, the combination with a stationaryshade-holder, an annular bearing projecting from the holder, a revoluble member having lugs and mounted on the annular bearing, a knife-carrying member having slots with which the lugs engage, a handle and a knife on the knife-carrying member, whereby the knife may be simultaoutwardly therefrom for confining the revoluble member between said annulus and the flange, a knife-carrying member, means disposed opposite each side the center of the apparatus for'permitting a simultaneous circumferential and radial movement of the knife-carrying member with relation to the shade, and a knife fixed to said member, substantially as described.

5. In a shade-trimming apparatus, the combination with a stationary shade-seat and a knife movable circumferentially about said seat, said knife being adapted for, radial movement with relation to the seat solely by manual pressure at the will of the operator.

6. In a shade-trimming apparatus, a stationary shade-seat, a knife member adapted for circumferential and radial movement with relation to the seat, and a knife carried by said member, the radial movement of said knife member being accomplished by normal pressure on the part of the operator.

7. In a shade-trimming apparatus, a stationary shade seat, and a single knife circumferentially movable about said seat, said knife being adapted for radial movement with relation to said seat, and independent means for clamping the shade to its seat.

8. In a -shade-trimming apparatus, a stationary shade-seat, a member circumferentially movable about the seat, and a knife movable with said member and having a sliding connection therewith, whereby the knife may be radially moved with relation to the seat by normal pressure and at the pleasure of the operator.

In testimony whereof I affiX my signature in presence of two witnesses.

JAMES A. 'IUFTS. Witnesses:

M. H. MALOTT, PAUL HURD. 

